CN209150222U - A kind of system preparing high circulation efficiency electrode - Google Patents
A kind of system preparing high circulation efficiency electrode Download PDFInfo
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- CN209150222U CN209150222U CN201821972810.3U CN201821972810U CN209150222U CN 209150222 U CN209150222 U CN 209150222U CN 201821972810 U CN201821972810 U CN 201821972810U CN 209150222 U CN209150222 U CN 209150222U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a kind of system for preparing high circulation efficiency electrode, including Electrode treatment unit, and with the concatenated temperature control processing unit of Electrode treatment unit, temperature control processing unit includes temperature control vacuum treatment installation or temperature control inertization device；With with the concatenated stripping unit of temperature control processing unit；Or including atmosphere box；It is vacuum or inert atmosphere inside atmosphere box；Be arranged in Electrode treatment unit inside atmosphere box, with the concatenated temperature-controlled box of Electrode treatment unit and with the concatenated stripping unit of temperature-controlled box；Electrode treatment unit includes the first source metal unreeling shaft；To be mended metal electrode unreeling shaft in parallel with the first source metal unreeling shaft；With with the first source metal unreeling shaft and the concatenated press-roller device of metal electrode unreeling shaft to be mended.The system only includes Electrode treatment unit and temperature control processing unit and stripping unit, and system is simple, and the full battery of the electrode fabrication of system preparation has higher first cycle efficieny and capacity retention ratio.
Description
Technical field
The utility model belongs to electrode fabrication field more particularly to a kind of system for preparing high circulation efficiency electrode.
Background technique
With very big theoretical specific capacity when silicon is used as lithium ion battery negative material, much larger than the theoretical ratio of graphite material
Capacity, exploitation silicon based anode material are of great significance for improving lithium ion battery energy density.But elemental silicon stores up body after lithium
Product expansion is serious, leads to the dusting of silicium cathode coating, falls off from collector, and cycle life is very poor, does not have practical value.And silicon
When oxygen material makees lithium ion battery negative material, volume expansion problem after storage lithium can be substantially improved, but silicon oxygen material
First charge discharge efficiency only has about 70%, far below the first charge discharge efficiency (about 90%) of graphite material.In order to improve, first charge discharge efficiency is relatively low to be asked
Topic supplements lithium metal as a kind of thinking on silicon oxygen cathode, receives extensive approval.For mending the realization side of lithium on cathode
Method, domestic and international expert expand a large amount of exploration and practice, and the following are several frequently seen modes:
Application publication number is the Chinese patent of CN102779975A: in the feeding wait mend setting storage lithium powder above cathode of lithium
Slot, when implementing to mend lithium, lithium powder is adsorbed on negative electrode tab surface under electric field action, is then adhered to lithium powder firmly by roll-in
Negative electrode tab surface, to realize benefit lithium.It is lithium powder particles that this method, which is able to achieve in the precondition that electrode surface uniformly mends lithium,
Want that small and uniform, pressure roller surface smoothness is high, pressure roller should adhere to lithium powder less as far as possible.
Application publication number is the Chinese patent of CN105489846A: by roll-in complex lithium band and lithium electrode to be mended, by lithium
Band is adhered to wait mend on lithium electrode, to form benefit lithium electrode, while as the removing of the first base material of complex lithium ribbon matrix, receipts
Volume.The precondition of this method functionization is that obtain ultra-thin lithium band (thickness is generally less than 10 μm), the surface of pressure roller flat
Whole degree Ying Jigao (to avoid uneven).
Application publication number is the Chinese patent of CN105702943A: the mixed-powder of negative electrode material and conductive agent is first prepared,
Mixed-powder is packed into conductive hopper, electrolyte to mixed-powder is added dropwise and infiltrates, electrolyte will be added dropwise using stainless steel gasket
Mixed-powder compacting, diaphragm is set in stainless steel gasket, gasket is set on diaphragm, lithium piece is set again on gasket, is passed through
All components are sealed by device, are then melted into using battery test system to sealing device, to realize negative electrode material
Pre- embedding lithium.
Application publication number is the Chinese patent of CN204966620U: being kept in contact, jointly for lithium device and cathode of lithium to be mended
Submergence in the electrolytic solution, due to contacting for lithium device and cathode of lithium to be mended, has electron channel, and since the two is soaked jointly
Not in the electrolytic solution, also there is therebetween ion channel, mend the half-cell that lithium mechanism is equivalent to an internal short-circuit, lithium ion
Deviate from from for lithium device, is obtaining electron reduction on cathode of lithium wait mend, therefore can realize benefit lithium.
The above-mentioned device for being used to prepare pole piece is more complicated, and the cycle efficieny of the pole piece prepared is poor.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of system for preparing high circulation efficiency electrode, the system
Simply, and preparation electrode fabrication full battery cycle efficieny with higher.
The utility model provides a kind of system for preparing high circulation efficiency electrode, including Electrode treatment unit, and described
The temperature control processing unit that Electrode treatment unit is connected in series, the temperature control processing unit includes temperature control vacuum treatment installation or temperature control
Inertization device；With with the concatenated stripping unit of temperature control processing unit, stripping unit is by the first source metal after pressure roller
It is separated with the metal electrode to be mended after pressure roller；
The Electrode treatment unit includes the first source metal unreeling shaft, for unreeling the first source metal；With first gold medal
The metal electrode unreeling shaft to be mended of category source unreeling shaft parallel connection, for unreeling metal electrode to be mended；It is put with first source metal
Spool and the concatenated press-roller device of metal electrode unreeling shaft to be mended, for by the first source metal and metal electrode pressure roller to be mended at multiple
Composite electrode.
The utility model provides a kind of system for preparing high circulation efficiency electrode, including atmosphere box；The atmosphere box
Inside is vacuum atmosphere or inert atmosphere；
The temperature-controlled box that Electrode treatment unit inside the atmosphere box is set, is connected in series with the Electrode treatment unit
With with the concatenated stripping unit of the temperature-controlled box, stripping unit by after pressure roller the first source metal and pressure roller after metal to be mended electricity
Pole separation；
The Electrode treatment unit includes the first source metal unreeling shaft, for unreeling the first source metal；With first gold medal
The metal electrode unreeling shaft to be mended of category source unreeling shaft parallel connection, for unreeling metal electrode to be mended；It is put with first source metal
Spool and the concatenated press-roller device of metal electrode unreeling shaft to be mended, for by the first source metal and metal electrode pressure roller to be mended at multiple
Composite electrode.
It preferably, further include that second source metal in parallel with the first source metal unreeling shaft and metal electrode unreeling shaft to be mended is put
Spool, for unreeling the second source metal；
First source metal unreeling shaft and the second source metal unreeling shaft be located at metal electrode unreeling shaft to be mended upside and
Downside.
Preferably, metal is selected from lithium or sodium in first source metal and the second source metal.
Preferably, it is negative to be selected from graphite cathode, hard carbon cathode, soft carbon cathode, carbonaceous mesophase spherules for the metal electrode to be mended
Pole, silicon-carbon cathode, silicon oxygen Carbon anode, silicium cathode, silicon oxygen cathode, lithium titanate anode, transition metal oxide cathode or sulfenyl are just
Pole.
Preferably, the temperature control vacuum treatment installation is vacuum drying oven or vacuum bag.
Preferably, the atmosphere in the inertization device is CO2Atmosphere or argon atmosphere.
Preferably, the stripping unit is guide roller axis.
It preferably, further include the rolling unit being connected in series with the stripping unit；The rolling unit will remove after the
Pole piece winding after the winding of one source metal and removing.
The utility model provides a kind of system for preparing high circulation efficiency electrode, including Electrode treatment unit, and described
The temperature control processing unit that Electrode treatment unit is connected in series, the temperature control processing unit includes temperature control vacuum treatment installation or temperature control
Inertization device；With with the concatenated stripping unit of temperature control processing unit, stripping unit is by the first source metal after pressure roller
It is separated with the metal electrode to be mended after pressure roller；Or including atmosphere box；The inside of the atmosphere box is vacuum atmosphere or inert atmosphere；
Be arranged in Electrode treatment unit inside the atmosphere box, the temperature-controlled box being connected in series with the Electrode treatment unit and with it is described
The concatenated stripping unit of temperature-controlled box, stripping unit separate the first source metal after pressure roller with the metal electrode to be mended after pressure roller.
Combination electrode can be filled in temperature control vacuum treatment installation or temperature control inertization again after press-roller device pressure roller in the utility model
Set middle processing；Can also connect temperature-controlled box after press-roller device, and the first metal shaft, metal electrode unreeling shaft to be mended, pressure roller are filled
It sets to be integrally placed in atmosphere box with temperature-controlled box and handle, the inside of the atmosphere box is vacuum atmosphere or inert atmosphere.This is practical new
The system that type provides includes only single including unwinding device, press-roller device and vacuum treatment installation or inertization device and removing
Member, system is simple, and the electrode first cycle efficieny with higher of system preparation.Also there is preferable cyclicity.Using this
The full battery of the electrode fabrication for the system preparation that utility model provides first cycle efficieny with higher and capacity retention ratio.Experiment
The result shows that: use the electrode of system provided by the utility model preparation come the first cycle efficieny of the full battery made for 85.7~
93.5%；After recycling 100 weeks, the capacity retention ratio of battery is 90.7~96.1%.
Detailed description of the invention
Fig. 1 a is the system structure diagram for the preparation high circulation efficiency electrode that the utility model one embodiment provides；
Fig. 1 b is the system structure diagram for the preparation high circulation efficiency electrode that another embodiment of the utility model provides；
Fig. 2 is the loop test effect picture of lithium battery prepared by the utility model comparative example 1 and embodiment 1.
Specific embodiment
The utility model provides a kind of system for preparing high circulation efficiency electrode, including Electrode treatment unit, and described
The temperature control processing unit that Electrode treatment unit is connected in series, the temperature control processing unit includes temperature control vacuum treatment installation or temperature control
Inertization device；With with the concatenated stripping unit of temperature control processing unit, stripping unit is by the first source metal after pressure roller
It is separated with the metal electrode to be mended after pressure roller；
The Electrode treatment unit includes the first source metal unreeling shaft, for unreeling the first source metal；With first gold medal
The metal electrode unreeling shaft to be mended of category source unreeling shaft parallel connection, for unreeling metal electrode to be mended；It is put with first source metal
Spool and the concatenated press-roller device of metal electrode unreeling shaft to be mended, for by the first source metal and metal electrode pressure roller to be mended at multiple
Composite electrode.
Referring to Fig. 1 a, Fig. 1 a is the knot of the system for the preparation high circulation efficiency electrode that the utility model one embodiment provides
Structure schematic diagram, wherein 1 be the first source metal unreeling shaft, 2 be metal electrode unreeling shaft to be mended, 3 be the second source metal unreeling shaft, 4
It is metal electrode to be mended for the first source metal, 5,6 be the second source metal, and 7 be the first pressure roller, and 8 be the second pressure roller, and 10 be deflector roll
Axis, 11 be the first source metal after removing, and 12 be pole piece after removing, and 13 be the second source metal after removing, and 14 be the first gold medal after removing
Category source Scroll, 15 be composite pole piece Scroll, and 16 be the second source metal Scroll after removing, and 21 be pole piece winding after removing
Axis, 17 be combination electrode, and 18a is air outlet valve, and 19a is intake valve, and 20a is temperature control processing unit.
The system of preparation high circulation efficiency electrode provided by the utility model includes Electrode treatment unit, the Electrode treatment
Unit includes the first source metal unreeling shaft 1, for unreeling the first source metal 4.First source metal 4 is selected from lithium source or sodium source.
The metallic element of first source metal selection and the metallic element wait mend in metal electrode are consistent, i.e. the same gold of simultaneous selection
Belong to element.
In the present invention, the lithium source is the compound of pure metal lithium, lithium alloy or lithium；The sodium source is pure metal
The compound of sodium, sodium alloy or sodium.
In the present invention, first source metal can exist in the form of individual one layer of active layer；It can also be with
Exist in the form of the composite layer of basal layer and active layer, the basal layer, which is selected from, has malleable metal layer or with heat resistance
And the non-metallic layer not reacted with lithium metal, specifically, the basal layer be selected from copper foil, aluminium foil, stainless steel foil, polyimides,
Poly- aramid fiber, polyester or polytetrafluoro.The thickness of composite layer entirety and the consistency of thickness of independent active layer.For active layer and composite layer
Thickness there is no particular/special requirement, as long as it meets peel strength, do not occur disconnected band situation.
The Electrode treatment unit includes to be mended metal electrode unreeling shaft 2 in parallel with the first source metal unreeling shaft, is used to
Unreel metal electrode 5 to be mended.In the present invention, the metal electrode to be mended 5 is selected from the cathode that can migrate metal or can move
Move the anode of metal；The cathode that metal can be migrated can be embedded in the cathode of metal；The anode that metal can be migrated can
It is embedded in the anode of metal.It is micro- that the metal electrode to be mended is preferably selected from graphite cathode, hard carbon cathode, soft carbon cathode, mesocarbon
Ball cathode, silicon-carbon cathode, silicon oxygen Carbon anode, silicium cathode, silicon oxygen cathode, lithium titanate anode, transition metal oxide cathode or sulphur
Base anode.In the utility model specific embodiment, the metal electrode to be mended is selected from the silicon oxygen that reversible capacity is 600mAh/g
Carbon compound cathode or sulphur carbon composite anode pole piece.
The Electrode treatment unit includes and the first source metal unreeling shaft and the concatenated pressure roller of metal electrode unreeling shaft to be mended
Device, for by the first source metal and metal electrode pressure roller to be mended at combination electrode 17.The press-roller device includes the first pressure roller 7
With the second pressure roller 8, first pressure roller and the second pressure roller are arranged oppositely.The roll-in host of press-roller device being capable of accurate induction pressure
And carry out roll gap adjustment.Press-roller device makes the first source metal and metal electrode to be mended realize physical bonds contact.After pressure roller
To combination electrode 17 composite pole piece Scroll 15 is delivered to by guide roller axis, combination electrode is wound.
The system of preparation high circulation efficiency electrode provided by the utility model includes company of connecting with the Electrode treatment unit
The temperature control processing unit 20a connect, the temperature control processing unit include temperature control vacuum treatment installation 201 or temperature control inertization device
202.Specifically, temperature control processing unit is connect with the press-roller device in Electrode treatment unit, and temperature control processing unit is provided with air inlet
Valve 18a and air outlet valve 19a.In this application, the temperature control vacuum treatment installation is vacuum drying oven or vacuum bag.The vacuum is dried
Case has the function of vacuumizing and temperature control.The temperature control inertization device is that inert gas realization is passed through in vacuum drying oven.
Temperature control inertization device be in inert atmosphere be CO2Atmosphere or argon atmosphere.The utility model is by the composite pole after winding
Piece is placed in temperature control processing unit and handles.
The system of preparation high circulation efficiency electrode provided by the utility model includes concatenated with the temperature control processing unit
Stripping unit, stripping unit separate the first source metal after pressure roller with the metal electrode to be mended after pressure roller.Stripping unit is to lead
Roll shaft 10, the number of guide roller axis is preferably >=1.Composite pole piece pass through guide roller axis after by after the first source metal after pressure roller and pressure roller wait mend
Metal electrode is removed.
It is also preferable to include the rolling units being connected in series with the stripping unit for the system；The rolling unit will be removed
Pole after pole piece 12 winds to after removing the first source metal Scroll 14 respectively and removes after the first source metal 11 winds and removes afterwards
Piece Scroll 21.
If the two sides of metal electrode to be mended is required to mend metal, preparation high circulation efficiency electrode provided by the utility model
System it is also preferable to include the second source metal unreeling shafts in parallel with the first source metal unreeling shaft and metal electrode unreeling shaft to be mended
3, for unreeling the second source metal 6；First source metal unreeling shaft and the second source metal unreeling shaft are located at metal electrode to be mended
The upper side and lower side of unreeling shaft.Correspondingly, the second source metal after pressure roller is removed at stripping unit, after stripping unit also
Need to be arranged removing after the second source metal Scroll 16, the second source metal 13 after removing is wound.
In the present invention, the speed for winding and unreeling is adjusted to properly, its speed be made to match respectively, can be tensioned
Carry out retractable volume.
Referring to Fig. 1 b, Fig. 1 b is the system of the preparation high circulation efficiency electrode provided in another embodiment of the utility model
Structural schematic diagram, wherein 9 be temperature-controlled box, and 20b is atmosphere box, and 18b is air inlet, and 19b is gas outlet.
The utility model provides a kind of system for preparing high circulation efficiency electrode, including atmosphere box；The atmosphere box
Inside is vacuum atmosphere or inert atmosphere；
The temperature-controlled box that Electrode treatment unit inside the atmosphere box is set, is connected in series with the Electrode treatment unit
With with the concatenated stripping unit of the temperature-controlled box, stripping unit by after pressure roller the first source metal and pressure roller after metal to be mended electricity
Pole separation；
The Electrode treatment unit includes the first source metal unreeling shaft, for unreeling the first source metal；With first gold medal
The metal electrode unreeling shaft to be mended of category source unreeling shaft parallel connection, for unreeling metal electrode to be mended；It is put with first source metal
Spool and the concatenated press-roller device of metal electrode unreeling shaft to be mended, for by the first source metal and metal electrode pressure roller to be mended at multiple
Composite electrode.
The processing carried out in atmosphere box can be carried out continuously, and improve working efficiency, save energy consumption.
System provided by the utility model includes atmosphere box 20b；The inside of the atmosphere box is vacuum atmosphere or indifferent gas
Atmosphere.The atmosphere box does not have temperature controlling function.The atmosphere box is preferably cube or cuboid.It is provided in the atmosphere box
Air inlet 18b and gas outlet 19b.
The system of preparation high circulation efficiency electrode provided by the utility model includes the electricity being arranged in inside the atmosphere box
Pole processing unit；The Electrode treatment unit includes the first source metal unreeling shaft, for unreeling the first source metal；With described first
The metal electrode unreeling shaft to be mended of source metal unreeling shaft parallel connection, for unreeling metal electrode to be mended；It is put with first source metal
Spool and the concatenated press-roller device of metal electrode unreeling shaft to be mended, for by the first source metal and metal electrode pressure roller to be mended at multiple
Composite electrode.Source metal unreeling shaft, metal electrode unreeling shaft to be mended and the press-roller device and above-mentioned technical proposal being arranged in atmosphere box
Described consistent, details are not described herein.
In the present invention, the processing unit includes the temperature-controlled box 9 being connected in series with the press-roller device.The control
The time required to incubator 9 enables to combination electrode to handle under temperature control, the quality for mending metallic element can be improved, improve and mend metal
The uniformity of element improves the first efficiency and cycle performance of electrode obtained.The temperature-controlled box has temperature controlling function.Temperature-controlled box is excellent
It is selected as insulating box.Combination electrode is entered in temperature-controlled box by guide roller axis, temperature control processing after also by guide roller axis go out temperature-controlled box again into
Row removing.
If the two sides of metal electrode to be mended is required to mend metal, preparation high circulation efficiency electrode provided by the utility model
System it is also preferable to include the second source metal unreeling shafts in parallel with the first source metal unreeling shaft and metal electrode unreeling shaft to be mended.
The angular speed of first source metal unreeling shaft, metal electrode unreeling shaft to be mended and the second source metal unreeling shaft is consistent；Second gold medal
Category source unreeling shaft is used to unreel the second source metal.
In the present invention, using the method for above system preparation high circulation efficiency electrode, comprising the following steps:
Source metal and metal electrode to be mended are subjected to roll-in, concora crush, air pressure or hydraulic, realization physical adhesion contact, true
Source metal is removed again after temperature control processing under empty or inert atmosphere, obtains high circulation efficiency electrode；
The metal electrode to be mended, which is selected from, can migrate the cathode of metal or can migrate the anode of metal；
Source metal is selected from lithium source or sodium source.
Preparation method provided by the utility model is simple, and electrode obtained cycle efficieny with higher, product quality
Height, and it is at low cost, with good application prospect.The full battery of electrode fabrication first cycle efficieny with higher and capacity are kept
Rate.
In the present invention, the metal in the source metal is selected from lithium or sodium；Source metal selection metallic element and to
The metallic element mended in metal electrode is consistent, i.e. the same metallic element of simultaneous selection.
In the present invention, the lithium source is the compound of pure metal lithium, lithium alloy or lithium；The sodium source is pure metal
The compound of sodium, sodium alloy or sodium.In the utility model specific embodiment, the source metal is band-like lithium-aluminium alloy, band-like
Pure metal lithium or the pure lithium band for covering copper.
In the present invention, the source metal can exist in the form of individual one layer of active layer；It can also be with base
The composite layer form of bottom and active layer exists, and the basal layer, which is selected from, has malleable metal layer or with heat resistance and not
The non-metallic layer reacted with lithium metal, specifically, the basal layer is selected from copper foil, aluminium foil, stainless steel foil, polyimides, poly- virtue
Synthetic fibre, polyester or polytetrafluoro.The thickness of composite layer entirety and the consistency of thickness of independent active layer.For the thickness of active layer and composite layer
No particular/special requirement is spent, as long as it meets peel strength, does not occur disconnected band situation.
In the present invention, the metal electrode to be mended is selected from the cathode that can migrate metal or can migrate metal just
Pole；The cathode that metal can be migrated can be embedded in the cathode of metal；The anode that metal can be migrated can be embedded in metal
Anode.The metal electrode to be mended is preferably selected from graphite cathode, hard carbon cathode, soft carbon cathode, carbonaceous mesophase spherules cathode, silicon-carbon
Cathode, silicon oxygen Carbon anode, silicium cathode, silicon oxygen cathode, lithium titanate anode, transition metal oxide cathode or sulfur-based positive electrode.At this
In utility model specific embodiment, the metal electrode to be mended is selected from the silicon oxygen carbon compound cathode that reversible capacity is 600mAh/g.
The utility model carries out the preparation of electrode preferably in atmosphere box；Atmosphere in atmosphere box is vacuum or indifferent gas
Atmosphere is carried out using device shown in Fig. 1 b in such cases.In the present invention, source metal and metal electrode to be mended can be
Roll-in, concora crush, air pressure or hydraulic are carried out under vacuum or inert atmosphere；It can also be in roll-in, concora crush, air pressure or hydraulic rear adjustment gas
The atmosphere of atmosphere case is vacuum or inert atmosphere, then carries out temperature control processing.
Source metal and metal electrode to be mended are carried out roll-in, concora crush, air pressure or hydraulic, realization physical adhesion by the utility model
Contact.Temperature control is handled in a vacuum or inert atmosphere again by source metal and after mending metal electrode physical adhesion contact, Neng Gouti
Height mends the quality of metallic element, improves the uniformity for mending metallic element, improves the first efficiency and cycle performance of electrode obtained.?
In the utility model, the vacuum degree of the vacuum is -10KPa~-99KPa.The inert atmosphere is carbon dioxide atmosphere or argon
Gas atmosphere.The temperature of the utility model temperature control processing in a vacuum or inert atmosphere is preferably 0~150 DEG C, more preferably 20~
110℃；The time of temperature control processing is preferably 0.1h~168h, more preferably 3h~72h.In the utility model specific embodiment
In, it handles in a vacuum or inert atmosphere specifically: in the case where vacuum degree is -20KPa, keep the temperature 4h at 110 DEG C；Or in vacuum degree
To keep the temperature 30h at 50 DEG C under -80KPa；Or under an argon atmosphere, 2 days are kept the temperature at room temperature；Or it vacuumizes and is encapsulated in packaging bag
Vacuum degree is evacuated to -90KPa, 80 DEG C of heat preservation 10h in vacuum drying oven；Or 55 DEG C of guarantors in the atmosphere box under vacuum degree is -70KPa
Warm 8h.
The utility model can by source metal and after mending metal electrode contact the composite band that is formed by aluminium plastic bag or its
He encapsulates to vacuumize and be encapsulated, and is placed in conventional environment.When being handled under the utility model vacuum atmosphere, it can also not have to
Heating, is directly deposited in room temperature environment, saves energy consumption.If needing to heat when processing, can be heated with entire volume；It can also be using receipts
The mode unreeled heats, i.e., carries out uncoiling heating to the composite band of source metal and metal electrode to be mended, then wind again.
In the present invention, the metal electrode to be mended is preferably shaped to sheet or band-like.
In the present invention, if source metal is sodium source, metal electrode to be mended is sodium electrode to be mended, then the electrode obtained is
Sode cell electrode；
If source metal is lithium source, metal electrode to be mended is lithium electrode to be mended, then the electrode obtained is lithium electrode.
In the present invention, the high circulation efficiency electrode of the preparation of preparation method described in above-mentioned technical proposal can be used to make
Standby battery.The battery is sode cell or lithium battery.
The utility model by by above-mentioned electrode plates and positive (cathode) pole piece laminating, prewelding, weld, enter shell, fluid injection,
Encapsulation, chemical conversion, two envelopes, is cut folding and is scalded, after partial volume, the processes such as aging at ageing, and battery is obtained.The utility model is to obtained battery
Carry out cycle efficieny and circulative test for the first time.
In order to further illustrate the utility model, a kind of Gao Xun is prepared to provided by the utility model below with reference to embodiment
The system of ring efficiency electrode is described in detail, but they cannot be interpreted as to the restriction to scope of protection of the utility model.
Comparative example 1
Silicon oxygen carbon (SOC) cathode pole piece is prepared by mixing, stirring, coating, roll-in, baking, cross cutting；
SOC cathode pole piece and nickel cobalt lithium aluminate (NCA) anode pole piece that band-like reversible capacity is 600mAh/g are passed through folded
Piece, prewelding, weld, enter shell, fluid injection, encapsulation, ageing, chemical conversion, two envelopes, cut folding scald, partial volume, the 18 big processes such as aging prepare it is soft
Packet battery, monolithic design 42Ah.As a result the test that first charge discharge efficiency and circulation are carried out to battery is shown in that Fig. 2, Fig. 2 are that this is practical new
The loop test figure of battery prepared by type comparative example 1 and embodiment 1, as can be seen from Figure 2: the decaying of comparative example circulation continuous.Circulation 100
The capacity retention ratio of battery is 82.1% after week.
The first charge discharge efficiency of battery prepared by comparative example 1 is 78.2%.
Embodiment 1
By mixing, stirring, coating, roll-in, baking, cross cutting, band-like silicon oxygen carbon (SOC) cathode pole piece is obtained；
Using device shown in Fig. 1 a, the silicon oxygen carbon for being 600mAh/g by band-like pure metal lithium and band-like reversible capacity is compound
Cathode pole piece carry out the compound direct contact of roll-in, realize physical adhesion contact, in vacuum drying oven, vacuum degree be -20KPa under,
4h is kept the temperature at 110 DEG C, is re-filled with after argon gas is cooled to room temperature and takes out, then remove lithium metal, obtains high circulation efficiency cathode
Pole piece.
By above-mentioned high circulation efficiency cathode pole piece and NCA anode pole piece by lamination, prewelding, weld, enter shell, fluid injection, envelope
Dress, chemical conversion, two envelopes, cuts that folding scalds, partial volume, the 18 big processes such as aging prepare soft-package battery, monolithic design 42Ah at ageing.To electricity
Pond carries out the test of first charge discharge efficiency and circulation, as a result as shown in Fig. 2, as can be seen from Figure 2: capacity during 2 circulating battery of embodiment
There is small rise process, preceding 10 weeks discharge capacities are almost unattenuated.
The first charge discharge efficiency of battery prepared by embodiment 1 is 91.3%.The capacity retention ratio of battery is after recycling 100 weeks
95.2%.
Embodiment 2
By mixing, stirring, coating, roll-in, baking, cross cutting, band-like silicon oxygen carbon (SOC) cathode pole piece is obtained；
Using device shown in Fig. 1 a, the silicon oxygen carbon for being 600mAh/g by band-like lithium-aluminium alloy and band-like reversible capacity is compound
Cathode carry out roll-in, realize physical adhesion contact, in vacuum drying oven, vacuum degree be -80KPa under, 30h is kept the temperature at 50 DEG C, then
It is filled with carbon dioxide and is cooled to room temperature taking-up, then remove lithium metal aluminium, obtain high circulation efficiency cathode.
By above-mentioned high circulation efficiency cathode and NCA anode by lamination, prewelding, weld, enter shell, fluid injection, encapsulation, ageing,
Chemical conversion, two envelopes cut that folding scalds, partial volume, the 18 big processes such as aging prepare soft-package battery, monolithic design 42Ah.Battery is carried out first
The test of secondary efficiency and circulation.
The first charge discharge efficiency of battery prepared by the utility model embodiment 2 is 89.1%.The capacity of battery is protected after recycling 100 weeks
Holdup is 93.2%.
Embodiment 3
Band-like silicon oxygen carbon (SOC) cathode pole piece is obtained by mixing, stirring, coating, roll-in, baking, cross cutting；
PET is basal layer, and pure lithium is active layer, and lithium band is made；
Using device shown in Fig. 1 a, the silicon oxygen carbon compound cathode that lithium band and band-like reversible capacity are 600mAh/g is carried out
Physical adhesion contact is realized in roll-in, under an argon atmosphere, is taken out after keeping the temperature 2 days at room temperature, then lithium band is removed, using cross cutting
Equipment is die cut, and high circulation efficiency cathode pole piece is obtained.
By above-mentioned high circulation efficiency cathode pole piece and NCA anode pole piece by lamination, prewelding, weld, enter shell, fluid injection, envelope
Dress, chemical conversion, two envelopes, cuts that folding scalds, partial volume, the 18 big processes such as aging prepare soft-package battery, monolithic design 42Ah at ageing.To electricity
The test of pond progress first charge discharge efficiency and circulation.
The first charge discharge efficiency of battery prepared by the utility model embodiment 3 is 89.4%.The capacity of battery is protected after recycling 100 weeks
Holdup is 91.1%.
Embodiment 4
Band-like silicon oxygen carbon (SOC) cathode pole piece is obtained by mixing, stirring, coating, roll-in, baking, cross cutting；
Using device shown in Fig. 1 a, band-like reversible capacity for the silicon oxygen carbon compound cathode pole piece of 600mAh/g and is covered into copper
Pure lithium band carry out roll-in, physical adhesion contact is realized, and vacuumize and be encapsulated in vacuum degree in packaging bag and be evacuated to -90KPa, true
80 DEG C of heat preservation 10h, are then charged with air and directly take out, then removed in empty baking oven, obtain high circulation efficiency cathode pole piece.
By above-mentioned high circulation efficiency cathode pole piece and NCA anode pole piece by lamination, prewelding, weld, enter shell, fluid injection, envelope
Dress, chemical conversion, two envelopes, cuts that folding scalds, partial volume, the 18 big processes such as aging prepare soft-package battery, monolithic design 42Ah at ageing.To electricity
The test of pond progress first charge discharge efficiency and circulation.
The first charge discharge efficiency of battery prepared by the utility model embodiment 4 is 85.7%.The capacity of battery is protected after recycling 100 weeks
Holdup is 90.7%.
Embodiment 5
Band-like sulphur carbon composite anode pole piece is obtained by mixing, stirring, coating, roll-in, baking, cross cutting；
Using device shown in Fig. 1 b, band-like sulphur carbon composite anode pole piece is subjected to roll-in with the pure lithium band for covering copper, is realized
Physical adhesion contact, 55 DEG C of heat preservation 8h in the atmosphere box under vacuum degree is -70KPa, is removed, and winding obtains high circulation efficiency
Cathode pole piece.
By above-mentioned high circulation efficiency anode pole piece and graphite cathode pole piece by lamination, prewelding, weld, enter shell, fluid injection, envelope
Dress, chemical conversion, two envelopes, cuts that folding scalds, partial volume, the 18 big processes such as aging prepare soft-package battery, monolithic design 2Ah at ageing.To battery
Carry out the test of first charge discharge efficiency and circulation.
The first charge discharge efficiency of battery prepared by the utility model embodiment 5 is 93.5%.The capacity of battery is protected after recycling 100 weeks
Holdup is 96.1%.
As seen from the above embodiment, the utility model provides a kind of system for preparing high circulation efficiency electrode, including electricity
Pole processing unit, the temperature control processing unit being connected in series with the Electrode treatment unit, the temperature control processing unit includes temperature control
Vacuum treatment installation or temperature control inertization device；With with the concatenated stripping unit of temperature control processing unit, stripping unit will
The first source metal after pressure roller is separated with the metal electrode to be mended after pressure roller；Or including atmosphere box；The inside of the atmosphere box is
Vacuum atmosphere or inert atmosphere；Electrode treatment unit inside the atmosphere box is set, is connected with the Electrode treatment unit
The temperature-controlled box of connection and with the concatenated stripping unit of the temperature-controlled box, stripping unit by after pressure roller the first source metal and pressure roller after
Metal electrode to be mended separation.Combination electrode can be vacuum-treated in temperature control again after press-roller device pressure roller and fill in the utility model
Set or temperature control inertization device in handle；Can also connect temperature-controlled box after press-roller device, by the first metal shaft, metal to be mended
Electrode unreeling shaft, press-roller device and temperature-controlled box, which are integrally placed in atmosphere box, to be handled, the inside of the atmosphere box be vacuum atmosphere or
Inert atmosphere.System provided by the utility model includes only including unwinding device, press-roller device and vacuum treatment installation or inertia
Processing unit and stripping unit, system is simple, and the electrode first cycle efficieny with higher of system preparation.Also have preferable
Cyclicity.Using the full battery of the electrode fabrication of system provided by the utility model preparation first cycle efficieny with higher and
Capacity retention ratio.The results showed that using the electrode of system provided by the utility model preparation come the head of the full battery made
Cycle efficieny is 85.7~93.5%；After recycling 100 weeks, the capacity retention ratio of battery is 90.7~96.1%.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (9)
1. a kind of system for preparing high circulation efficiency electrode, which is characterized in that including Electrode treatment unit, with the Electrode treatment
The temperature control processing unit that unit is connected in series, the temperature control processing unit includes temperature control vacuum treatment installation or temperature control inertization
Device；With with the concatenated stripping unit of temperature control processing unit, stripping unit by after pressure roller the first source metal and pressure roller after
Metal electrode to be mended separation；
The Electrode treatment unit includes the first source metal unreeling shaft, for unreeling the first source metal；With first source metal
The metal electrode unreeling shaft to be mended of unreeling shaft parallel connection, for unreeling metal electrode to be mended；With with the first source metal unreeling shaft
With the concatenated press-roller device of metal electrode unreeling shaft to be mended, for by the first source metal and metal electrode pressure roller to be mended at compound electric
Pole.
2. system according to claim 1, which is characterized in that the temperature control vacuum treatment installation is vacuum drying oven or vacuum
Bag.
3. system according to claim 1, which is characterized in that the atmosphere in the temperature control inertization device is CO2Atmosphere
Or argon atmosphere.
4. a kind of system for preparing high circulation efficiency electrode, which is characterized in that including atmosphere box；The inside of the atmosphere box is true
Air atmosphere or inert atmosphere；
Be arranged in Electrode treatment unit inside the atmosphere box, the temperature-controlled box being connected in series with the Electrode treatment unit and with
The concatenated stripping unit of temperature-controlled box, stripping unit divide the first source metal after pressure roller and the metal electrode to be mended after pressure roller
From；
The Electrode treatment unit includes the first source metal unreeling shaft, for unreeling the first source metal；With first source metal
The metal electrode unreeling shaft to be mended of unreeling shaft parallel connection, for unreeling metal electrode to be mended；With with the first source metal unreeling shaft
With the concatenated press-roller device of metal electrode unreeling shaft to be mended, for by the first source metal and metal electrode pressure roller to be mended at compound electric
Pole.
5. system according to claim 1 or 4, which is characterized in that further include and the first source metal unreeling shaft and gold to be mended
Belong to the second source metal unreeling shaft of electrode unreeling shaft parallel connection, for unreeling the second source metal；
First source metal unreeling shaft and the second source metal unreeling shaft are located at the upper side and lower side of metal electrode unreeling shaft to be mended.
6. system according to claim 5, which is characterized in that metal is selected from first source metal and the second source metal
Lithium or sodium.
7. system according to claim 1 or 4, which is characterized in that the metal electrode to be mended is selected from graphite cathode, hard carbon
Cathode, soft carbon cathode, carbonaceous mesophase spherules cathode, silicon-carbon cathode, silicon oxygen Carbon anode, silicium cathode, silicon oxygen cathode, lithium titanate are negative
Pole, transition metal oxide cathode or sulfur-based positive electrode.
8. system according to claim 1 or 4, which is characterized in that the stripping unit is guide roller axis.
9. system according to claim 1 or 4, which is characterized in that further include the receipts being connected in series with the stripping unit
Roll unit；Pole piece winding after the first source metal winds and removes after the rolling unit will be removed.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821972810.3U CN209150222U (en) | 2018-11-27 | 2018-11-27 | A kind of system preparing high circulation efficiency electrode |
| US17/297,928 US20220020975A1 (en) | 2018-11-27 | 2019-11-27 | System for preparing electrode having high cycle efficiency, method for preparing electrode having high cycle efficiency, and application thereof |
| PCT/CN2019/121116 WO2020108503A1 (en) | 2018-11-27 | 2019-11-27 | System for preparing electrode having high cycle efficiency, method for preparing electrode having high cycle efficiency, and application thereof |
| EP19889643.3A EP3890065A4 (en) | 2018-11-27 | 2019-11-27 | System for preparing electrode having high cycle efficiency, method for preparing electrode having high cycle efficiency, and application thereof |
| JP2021530291A JP7158585B2 (en) | 2018-11-27 | 2019-11-27 | System for manufacturing electrode with high cycle efficiency, method for manufacturing electrode with high cycle efficiency and its application |
| KR1020217019402A KR102656071B1 (en) | 2018-11-27 | 2019-11-27 | System for manufacturing electrodes with high cycle efficiency, method for manufacturing electrodes with high cycle efficiency, and applications thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821972810.3U CN209150222U (en) | 2018-11-27 | 2018-11-27 | A kind of system preparing high circulation efficiency electrode |
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| Publication Number | Publication Date |
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| CN209150222U true CN209150222U (en) | 2019-07-23 |
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| CN201821972810.3U Active CN209150222U (en) | 2018-11-27 | 2018-11-27 | A kind of system preparing high circulation efficiency electrode |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224070A (en) * | 2018-11-27 | 2020-06-02 | 北京卫蓝新能源科技有限公司 | System for preparing high-cycle-efficiency electrode |
| WO2020108503A1 (en) * | 2018-11-27 | 2020-06-04 | 北京卫蓝新能源科技有限公司 | System for preparing electrode having high cycle efficiency, method for preparing electrode having high cycle efficiency, and application thereof |
-
2018
- 2018-11-27 CN CN201821972810.3U patent/CN209150222U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224070A (en) * | 2018-11-27 | 2020-06-02 | 北京卫蓝新能源科技有限公司 | System for preparing high-cycle-efficiency electrode |
| WO2020108503A1 (en) * | 2018-11-27 | 2020-06-04 | 北京卫蓝新能源科技有限公司 | System for preparing electrode having high cycle efficiency, method for preparing electrode having high cycle efficiency, and application thereof |
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Effective date of registration: 20230105 Address after: 102402 No. 1, Qihang West Street, Doudian Town, Fangshan District, Beijing Patentee after: BEIJING WELION NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee after: INSTITUTE OF PHYSICS, CHINESE ACADEMY OF SCIENCES Address before: 102402 No. 1, Qihang West Street, block 01, Doudian Town, Fangshan District, Beijing Patentee before: BEIJING WELION NEW ENERGY TECHNOLOGY Co.,Ltd. |